1 |
|
2 |
|
3 |
|
4 | 'use strict';
|
5 |
|
6 | module.exports = class FileHelper {
|
7 |
|
8 | static getBasename (file) {
|
9 | return path.basename(file, path.extname(file));
|
10 | }
|
11 |
|
12 | static getRelativePathByDirectory (name, file) {
|
13 | const basePath = this.getClosestDirectory(name, file);
|
14 | return basePath ? this.getRelativePath(basePath, file) : file;
|
15 | }
|
16 |
|
17 | static getRelativePath (basePath, file) {
|
18 | return file.indexOf(basePath) === 0 ? file.substring(basePath.length + 1) : file;
|
19 | }
|
20 |
|
21 | static trimExtension (file) {
|
22 | return file.substring(0, file.length - path.extname(file).length);
|
23 | }
|
24 |
|
25 | static getStat (file) {
|
26 | return new Promise(resolve => fs.stat(file, (err, stat) => resolve(err ? null : stat)));
|
27 | }
|
28 |
|
29 | static async delete (file) {
|
30 | const stat = await this.getStat(file);
|
31 | if (!stat) {
|
32 | return false;
|
33 | }
|
34 | if (stat.isFile()) {
|
35 | return fs.promises.unlink(file);
|
36 | }
|
37 | await PromiseHelper.setImmediate();
|
38 | await this.handleChildren(file, child => this.delete(path.join(file, child)));
|
39 | return fs.promises.rmdir(file);
|
40 | }
|
41 |
|
42 | static async copy (source, target, flags) {
|
43 | const stat = await fs.promises.stat(source);
|
44 | if (stat.isFile()) {
|
45 | await this.createDirectory(path.dirname(target), {mode: stat.mode});
|
46 | return fs.promises.copyFile(source, target, flags);
|
47 | }
|
48 | await this.createDirectory(target, {mode: stat.mode});
|
49 | await PromiseHelper.setImmediate();
|
50 | await this.handleChildren(source, file => {
|
51 | return this.copy(path.join(source, file), path.join(target, file), flags);
|
52 | });
|
53 | }
|
54 |
|
55 | static async copyChildren (source, target, flags) {
|
56 | const stat = await fs.promises.stat(source);
|
57 | if (stat.isDirectory()) {
|
58 | await this.handleChildren(source, file => {
|
59 | return this.copy(path.join(source, file), path.join(target, file), flags);
|
60 | });
|
61 | }
|
62 | }
|
63 |
|
64 |
|
65 |
|
66 | static readDirectory (dir) {
|
67 | return new Promise(resolve => fs.readdir(dir, (err, result) => resolve(err ? [] : result)));
|
68 | }
|
69 |
|
70 | static createDirectory (dir, options) {
|
71 | return fs.promises.mkdir(dir, {
|
72 | recursive: true,
|
73 | ...options
|
74 | });
|
75 | }
|
76 |
|
77 | static emptyDirectory (dir) {
|
78 | return this.handleChildren(dir, file => this.delete(path.join(dir, file)));
|
79 | }
|
80 |
|
81 | static getClosestDirectory (name, dir) {
|
82 | let base = path.basename(dir);
|
83 | while (base) {
|
84 | if (base === name) {
|
85 | return dir;
|
86 | }
|
87 | base = path.dirname(dir);
|
88 | if (base === dir) {
|
89 | break;
|
90 | }
|
91 | dir = base;
|
92 | base = path.basename(dir);
|
93 | }
|
94 | }
|
95 |
|
96 |
|
97 |
|
98 | static isJsonExtension (file) {
|
99 | return path.extname(file).toLowerCase() === '.json';
|
100 | }
|
101 |
|
102 | static async readJsonFile (file) {
|
103 | return JSON.parse(await fs.promises.readFile(file));
|
104 | }
|
105 |
|
106 | static filterJsonFiles (files) {
|
107 | return files.filter(this.isJsonExtension, this);
|
108 | }
|
109 |
|
110 |
|
111 |
|
112 | static handleChildDirectories (dir, handler) {
|
113 | return this.handleChildren(dir, async file => {
|
114 | const stat = await fs.promises.stat(path.join(dir, file));
|
115 | if (stat.isDirectory()) {
|
116 | await handler(file, dir, stat);
|
117 | }
|
118 | });
|
119 | }
|
120 |
|
121 | static handleChildFiles (dir, handler) {
|
122 | return this.handleChildren(dir, async file => {
|
123 | const stat = await fs.promises.stat(path.join(dir, file));
|
124 | if (stat.isFile()) {
|
125 | await handler(file, dir, stat);
|
126 | }
|
127 | });
|
128 | }
|
129 |
|
130 | static async handleChildren (dir, handler) {
|
131 | const files = await fs.promises.readdir(dir);
|
132 | for (const file of files) {
|
133 | await handler(file, dir);
|
134 | }
|
135 | }
|
136 | };
|
137 |
|
138 | const fs = require('fs');
|
139 | const path = require('path');
|
140 | const PromiseHelper = require('./PromiseHelper'); |
\ | No newline at end of file |